subtevssureTell them apart

Quick tell: subte is a noun, sure is an adjective, so they fill different roles in a sentence.

Which to use

“subte” is a noun and “sure” is an adjective - they look or sound alike but fill different roles in a sentence.

#22,521
“subte” frequency rank
#42,717
“sure” frequency rank
65238
confusion score

Side-by-Side Comparison

Feature subte sure
Definition Sistema ferroviario subterráneo de transporte de pasajeros. Seguro, convencido.

Where the eye mixes subte and sure

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
subte
4 ch
sure

Look-alike desk: subte vs sure

These two trip readers on the page rather than in the ear: subte is [ˈsuβ̞t̪e] while sure is /ʃʊə/ (fusión pour–poor). Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 65238, derived from the frequency rank of both members and their visual similarity.

subte is recorded at frequency rank #22,521, classified as anoun, pronounced [ˈsuβ̞t̪e]. sure is at rank #42,717, tagged as anadj, pronounced /ʃʊə/ (fusión pour–poor).

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 65238, this pair ranks #43,243 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of subte vs sure

Shared letters: esu. Private to "subte": bt. Private to "sure": r.

"subte" · 5 letters · shape CVCCV  ·  "sure" · 4 letters · shape CVCV

Known mistypes of this pair

  • subtesbute · ssubte · subbte · subet · subtte · sutbe · suvte · usbte
  • suresrue · ssure · surre

Frequently Asked Questions

Is swapping "subte" for "sure" ever safe?
No - they are not even the same part of speech. "subte" is a noun and "sure" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "subte" or "sure"?
"subte" is the more common of the two: it sits at frequency rank #22,521 in our Spanish list, against #42,717 for "sure". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "subte" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sure" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #43,243 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "subte" and "sure" also get mixed up with nearby pairs, the highest-scored neighbour is "sari vs sure". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #43,243 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list